A: Because the only two official languages of NATO are French and English. To be a NATO employee, you have to be fluent in one and have a working knowledge of the other.
Mg + 2H₂O → Mg(OH)₂ + H₂ + heat
Apparently, this produces enough hydrogen to be a safety hazard in enclosed places like planes, which is why the outside of the box says don't do it on planes.
en.wikipedia.org/wiki/Canning